Double barrel firearm with a single trigger



Nov. 8, 1966 o. D. BILLS ET AL 3,283,436

DOUBLE BARREL FIREARM WITH A SINGLE TRIGGER 2 Sheets-Sheet 1 Filed March 8, 1965 ZNVENTOR. OCIE DALE BILLS ,FRANKLYN E.EDWARDS BY OTIS s. SLEDGE Wu MA N/1w ATTORNEY Nov. 8, 1966 o. D. BILLS ET 3,283,436

DOUBLE BARREL FIREARM WITH A SINGLE TRIGGER Filed March 8, 1965 2 Sheets-Sheet 2 INVENTOR. OCIE DALE BILLS FRANKLYN E. EDWARDS BY 011s e. SLEDGE 21 WW ATTORN EY United States Patent 3,283,436 DOUBLE BARREL FIREARM WITH A SINGLE TRIGGER Ocie Dale Bills, 1605 Burns, Franklyn E. Edwards, 1841 Burns, and Otis G. Sledge, 1629 S. Market, all of Wichita, Kans.

Filed Mar. 8, 1965, Ser. No. 437,718 7 Claims. (Cl. 4242) This invention relates to firearms, more particularly to double barrel type firearms. Still more specifically the invention relates to double barrel firearms having the barrels arranged in an over and under relationship, and improved firing mechanisms for same. The invention also relates to a new thrust block means which lends strength to the firearm making it safer to use, and makes possible a weight reduction.

Double barrel type firearms are in general old in the art. This type of firearm has enjoyed great popularity with sportsmen, and is increasing in popularity. One apparent reason for the popularity of this type firearm is that it is well adapted to hunt a wide variety of game under differing conditions. The double barrel type firearm is ordinarily provided with two different type barrels mounted on a single receiver. For example, in shotguns, one barrel can be provided that fires a wide shot pattern for close range, and a second barrel that fires a close shot pattern for long range. Any desirable barrel combination can be provided as for example, a shotgun barrel and a rifle barrel.

However, the known double barrel firearms have a number of shortcomings. Many of such firearms have a separate trigger for each barrel which often causes confusion. When a single trigger is provided to alternately fire the shells in the respective barrels, the firing mechanism is complex, expensive, and particularly prone to malfunctioning. Further, the safety mechanisms provided usually lock only the trigger. There is a danger that the firing pins when in cocked position can be released by a shock to fire the weapon. Another shortcoming of double barreled guns known to the art is that the structure supporting the barrels on the receiver must be relatively heavy in order to withstand the pressures developed in the barrels during firing. This relatively heavy structure is objectionable because it results in a gun that is heavy, tiring to carry, and hard to maneuver when fast action is required.

We have invented a new firearm. The firearm of or invention has a plurality of barrels, a means for supporting the barrels in a parallel over and under relationship, and a receiver. A means are provided for pivotally joining the means for supporting the barrels and the receiver. A firing mechanism is mounted on the receiver which has a plurality of firing pins, means for cocking the firing pins, a trigger, a means to connect in activating relation the trigger individually to each one of the plurality of firing pins, and a selector means to automatically alternate this last-mentioned means.

The firearm of our invention solves all of the problems connected with double barrel type firearms known to the prior art. A firearm provided with the novel thrusts abutment means makes possible a gun design that is of light construction but capable in use of withstanding the high pressures developed in the barrels during firing. The firearm embodying our novel thrust abutment means can be made to be well balanced, and light in weight. The abutment means also makes possible a slim, compact firearm that is safer to use. The firing mechanism in our new firearm represents a great improvement over firing mechanisms for double barrel firearms known to the prior art. The firing mechanism of our invention utilizes a 3,283,436 Patented Nov. 8, 1966 single trigger to individually fire the barrels. A novel means is provided for automatically changing the triggering mechanism to fire the alternate barrel after the first barrel is fired. The mechanism is also provided with a safety means which locks both the trigger and thefiring pins. Thus jars and the like to the firearm cannot cause inadvertent firing of same by releasing the cocked firing pins, as is the case with many firearms known to the prior art. The firing mechanism used in our novel firearm is also very dependable in operation, relatively inexpensive to produce, and not prone to malfunctioning.

It is contemplated that in the firearm of our invention, a common receiver can be utilized to mount a variety of types of barrels. F0 example, the firearm can be used to mount two shotgun barrels, a shotgun barrel and a rifle barrel, or shotgun barrels with varying types of choke. Thus, our firearm in combination with a plurality of different types of barrels is a universal firearm which can be adapted to practically any type of hunting, and ditfering conditions.

An object of our invention is to provide a new double barrel firearm.

Another object of our invention is to provide a new double barrel firearm that is slim, light in weight, and well balanced.

Still another object of our invention is to provide a new lever action double barrel firearm provided with an over and under barrel arrangement.

Still another object of our invention is to provide a double barrel firearm having a single trigger which activates both barrels and a mechanism which automatically alternates the actuating sequence of the trigger.

Yet another object of our invention is to provide a new double barrel firearm having an improved safety means which locks both the trigger and the firing pins.

Another object of our invention is to provide, in a firearm having a plurality of barrels, a new thrust abutment means which adapts the firearm to withstand the terrific pressures developed in the barrels during firing and which make possible the designing of a light and slim receiver.

Yet another object of our invention is to provide a new double barrel firearm that is dependable, and safe in operation.

Yet another object of our invention is to provide a new lever action double barrel type of firearm with a single trigger that is provided with a selector mechanism which automatically changes the sequence of the trigger mechanism, which can also be manually altered.

Other objects and advantages of the new firearm of our invention will become apparent to those skilled in the art upon reading the disclosure.

Drawings accompany and are a part of this disclosure. These drawings depict preferred specific embodiments of the new firearm of our invention, and it is to be understood that such drawings are not to unduly limit the scope of our invention. In the drawings,

FIG. 1 is a side elevational view in :broken cross section of a preferred specific embodiment of the new double barrel firearm of our invention.

FIG. 2 is a perspective view partly broken away and in partial cross section of the new firearm of our invention, illustrating same in broken position.

FIG. 3 is a perspective view in exploded relation of the mechanism of the firearm of our invention.

The following is a discussion and description of the new firearm of our invention made with reference to the drawings, wherein the same reference numerals are used to indicate the same or similar parts and/or structure. The discussion and description is of preferred specific embodiments of the new firearm of our invention, and it is to be understood that such is not to unduly limit the scope of our invention.

Referring now to FIGS. 1-3 of the drawings, there is illustrated firearm of our invention. The firearm or gun ltl'has two barrels 11, and abarrel support 12 which holds the barre-ls in parallel over and under relationship. The barrels of the gun can be on any suitable size, caliber, choke, etc., and have shell chambers 14 and 15. A retractable shell extractor 16 is mounted on the rearward end of barrel support 12. As indicated most clearly in' FIG. 2,: the shell extractor 16 has parallel longitudinally extending side members 18 slidably mounted in grooves in the barrel support, and a shell engaging plate 20 connected to the rear ends of slide members 18. The plate 20 is provided with two spaced locking :other end to the cocking lever 44 with pin 59 at a point spaced from pin 48. TWO vertically spaced firing pins 58 and 60 are loosely mounted in apertures in breech block 3t and extend through the oblong apertures 55 and 54 in the cocking block 50. Each of the firing pins 58 and 60 have an enlarged abutment 62 on the central portion provided with a cam follower surface that is positioned in operative engagement with the respective camming projections 53 and 51 on the cocking block. A notch 64 is provided on each firing pin having a transverse edge on the lower side spaced from the enlarged abutment. A horizontally extending transverse triangular shaped camming projection 66 is also positioned adjacent the rear end of the firing-pin. A sear block 68 is mounted in receiver 26. The sear block 68 having upper and lower vertically spaced apertures which receive portions of the firing pins 58 and'60 is located in the cavity port 12 to the forward end portions of the'side plates 32. As indicated in FIG. 2, the rear portions of the barrels are positioned between the plates 32. It is understood that any suitable type of structure can be used to pivotally connect the barrel support 12 and the receiver 26. For example it is contemplated that asuitable protruding of slide members 18 of the shell extractor to the slide plates. As indicated in the drawing of FIG. 2 this cam means (not illustrated) can consist of pins 38 positioned in side plates 32 which engage cam follower surfaces on I slide elements 18. The cam means operatively connecting the sides 32 to the shell extractor is designed to retract the shell extractor 16 when the firearm is broken, as indicated in FIG. 2. In use the plate 20 will engage the edges of shells seated in the chambers 14 and 15 and move same rearwardly, or in alternative eject same. A thrust abutment means is provided for maintaining the barrels in the firearm and the receiver 26 in immovable relative position during firing, and enabling the firearm to Withstand the tremendous pressures generated within the barrels. This thrust abutment means is desirably formed with outwardly extending arcuate shaped lugs 40 positioned on the flat side surfaces 41 of the barrel support 12, and complementary arcuate shaped grooves 42 positioned on the inside facing surfaces of the side plates 32. As believed apparent, the lugs 40 are snugly received in the grooves 42 when the barrel support 12 and barrels of the firearm are pivoted into firing position. The grooves 42 in lugs 40 maintain the rearward end of the barrel chambers and the breech block 30 of the receiver in very close position. The thrust abutment means lends a great deal of strength to the pivoted joint which in use makes possible the designing of a desirable slim firearm which is relatively light in weight.

A cocking lever 44, having a handle portion 45 and a trigger guard portion 46, is pivotally connected at the [forward end to apertured lugs 47 on the receiver with pin 48. The receiver 26 is provided with a cavity adjacent the breech block 30 which houses a firing mechanism. The firing mechanism includes a cocking block 50 which is slidably mounted on the breech block 30. The cocking block has three longitudinally spaced wedge shaped protrusions 51, 52, and 53, respectively, each provided with camming surfaces thereon, and two spaced oblong apertures 54 and 55 adjacent the end protrusions 51 and 53. A link means 56 is joined at one end to spaced apertured ears 58 on cooking block 50 and at the in the receiver. These vertically spaced apertures in the sear block looselyreceive the firing pins, and are provided with upwardly extending projections 70 that are adapted to selectively engage the notches 64 on firing pin 58 and 60. In FIG. 1 of the drawings the lower firing pin 58 is shown wit-h the notch 64 in engaged position hooked on projection 70. The upper firing pin 60 is shown in disengaged position. As indicated in FIGS.

1 and 2, there is sufficient clearance in the upper and lower apertures in the sear block 68 to allow engagement and disengagement of the notch means 64 on the engaging'projections 70. The scar block 68 is also provided with longitudinally extending groove 71 on the front,

side thereof. A safety means is seated in groove 71. A safety means has a pressure element 72 slidably mounted in groove 71. The pressure element 72 has a'generally transversely inclined cam follower surface 74 on the upper end, a trigger engaging lug 75 on the lower opposite end, and a block 76 provided with three longitudinally spaced apertures. The block 76 is slidably mounted in an elongated central aperture: in the pressure element 72. A coil spring 78 is provided on the top end to bias the block 76 downwardly with respect to the pressure element. The relative position of the pressure element 72 is most clearly shown in FIGS. 1 and 2 of the drawings. Pressure element 72 is slidably disposed in the groove 71 of the sear block 68 with the firing pins 58 and 60 disposed in the upper and lower apertures. The block 76 thereby applies a downwardly directed force on the firing pins which serves to maintain them in a hook position in the sear block when they are in cocked position. A safety actuating butt-on 80 is slidably mounted on the top of receiver 26 and is connected to a camming element 81 provided with a camming surface which is maintained in operative engagement with the inclined cam follower surface 74 on the pressure element 72. It can be seen that forward and rearward movement of button 80 varies the vertical position of the pressure element 72. Preferably with the safety actuating button 80 in off position, to the rear, the block 76 of the pressure element applies a downward pressure of approximately 10 pounds to the upper sides of the firing pins 58 and 60. However, .when the safety actuating button 80 is moved forwardly to the non-firing position the pressure element 72 is moved downwardly compressing the spring 78. In this position it is preferred that the block 76 apply approximately a 40 pound pressure to the top of the firing pins 58 and 60 to thus very securely lock them in position when they are in the cocked position. Forward movement of button 80 also moves the trigger locking lug 75 downwardly to lock the trigger as will be explained later. A cover plate 82, provided with three vertically spaced apertures, is disposed in groove 71 in overlying relationship to pressure element 72. Coil springs 84 are disposed about firing pins 69 and abut the cover plate 82 and abutting means 62 on the firing pins.

A triggering means is mounted on the receiver of our firearm. The triggering means includes a second groove 86 in the sear block opposite groove 71, a trigger 88, and a means 90 slidably mounting the trigger 88 on the receiver. The means 98 for mounting the trigger preferably consists of a longitudinal groove in a plate 91 secured to the bottom of receiver 26, and a block slidably mounted therein. A spring means of some suitable type is used to bias the block supporting the trigger to a forward position. This spring means can consist of a coil spring seated in a groove or aperture in plate 91 and is not shown. A tripping element 92 is pivotally mounted on the means 90 supporting the trigger. The tripping element 92 is provided with a locking groove 93 at one end of which is adapted to receive the trigger locking lug 75 of pressure element 72, an inclined camming surface 94, a longitudinally extending slot 95, preferably disposed in the central portion, and pin means 96 to pivotally mount tripping element 92. A suitable means is desirably provided in the trigger 88 to manually pivot the tripping element 92 from one side to another. This means preferably consists of a button 97 extending through the trigger 88 and operably connected to the tripping element 92. It can be seen that wit-h this type of arrangement, which is not shown in detail, the tripping element 92 can be shifted to the left for example with a movement to the left of the button 97. The reason for shifting the tripping element will become apparent as further structure is described.

An L-shaped tripping link 98, having a transverse portion, is slidably mounted in groove 76. The link 98 is provided with a cam follower surface 99 on the lower end. Link 98 is positioned in the sear block 68 With the transverse portion thereof selectively engaging the under side of the upper firing pin 60, as most clearly shown in FIG. 2. A second tripping link 1% is also slidably mounted in sear block 68 opposite the first link 98. Link 180 has a transverse portion 162 that engages the underside of the lower firing pin 58, and a cam follower surface 183 on the lower end. The links 98 and 100 are slidably mounted in the sear block 68 with the respective cam follower surfaces 99 and 184 positioned to be selectively engaged by the camming surface 94 on tripping element 92. It can be seen that when the trigger 88 is pulled backwardly the camming surface 94 will engage the cam follower surface of either 99 or 103 to thereby force the respective link member 98 or 100 upwardly. Upward movement of either of links 98 and 100 will force the end of the respective firing pin upwardly thus unhooking the notch 64 from the projection 70 in the sear block allowing the spring 84 to force it forwardly and thus fire a shell contained in the chamber of the barrel. As will be appreciated the tripping element 92 when pivoted in one position will be in engagement with one of the links, for example 98, and when pivoted in the opposite position will be in engagement with the link 100. It can be seen that the trigger 88 can be used to selectively fire either of the barrels of the gun. A cover plate 104, having suitable spaced apertures therein is mounted in groove 86 in overlying relationship to links 98 and 100.

A locking means is provided to lock the barrels 11 and receiver 26 of the firearm in aligned firing position. This locking means includes two horizontally spaced locking pins 106 disposed in apertures in the breech block 30. The locking pins 106 are adapted to be positioned in locking engagement with the locking apertures 22 in the shell engaging plate 29 of the shell extractor. As most cleanly illustrated in FIG. 2, the locking pins 166 are mounted on a connecting member 108 which in turn has a cam follower surface in engagement with the center pr0jec tion 52 on cocking block 50. In operation when the cocking lever 44 is moved downwardly the cocking block is also pulled down thus withdrawing the pins 106 from the apertures 22 to unlock the barrel support from the receiver allowing same to be broken.

An automatic selector means for changing the firing order of the firing pins is contained within the receiver 26 of our firearm. This selector means includes a shaft 110 mounted on the selector member 108. The shaft 110 has a reduced diameter portion 112 and a camming surface 114, as most clearly indicated in FIG. 3 in the drawings. A coil spring 116 is disposed about shaft 110' to urge the pins 106 into engagement with the shell extractor. The shaft 110 extends through the sear block 68, through the pressure actuating means 72 and cover plates as indicated in FIGS. 1 and 2. An elongated selector actuator element 116 is pivotally mounted on shaft 110. The actuator element 116 has a rectangular central opening with two blocks 118 slidably mounted therein. The blocks 118 are each provided with an L-shaped aperture 121i and a cam follower surface 122 which operatively engages the camming surface 114 on shaft 110. Two opposed coil springs 124 are mounted on the selector actuator 116 to bias the blocks 120 toward each other and in engagement with the shaft 110. A pin element 126 is secured to the lower end of selector actuator 116 i with the lower portion positioned in slot 95 in tripping element 92. Preferably, the camming projection 52 on cocking block 50 has a steeper tangle than the projections 51 and 53. This greater camming angle on projection 52 forces the shaft rearwardly at a faster rate than the firing pins are force-d rearwardly when the cocking block is moved downwardly by the cocking lever. Rearward movement of shaft 110 forces the camming surface 114 into operative engagement with the cam follower surfaces 122 of blocks 118 thus spreading them apart. When the blocks are spread apart in this manner the enlarged portions of the L-shaped apertures allow the camming projections 66 of firing pins 58 and 60 to pass therethrough. Since the shaft 110 is moved rearwardly as a faster rate by the nature of the camming surfaces, previously described, the blocks are moved apart into proper position to receive the ends of the firing pins before the firing pins reach the selector actuating element 116. When the cocking lever is moved completely downward the firing pins are placed in cocked position in hooked relation in the sear block with the end portions thereof extending through the selector actuator elernent 116. When the cocking lever is returned to normal position, shown in FIG. 1, the shaft 110' is moved forward by spring 11s and the blocks 120 of the actuator element 116 are allowed to move toward each other. At this point the firing pins are positioned in the narrow leg portions of apertures 120. Either barrel of the firearm can be selected for firing by manipulation of the button 97 positioned in the trigger. Button 97 causes the tripping element 92 to be operatively engaged with either of the links 98 and 160. When one of the firing pins is disengaged it moves forwardly and the camming projection 66 strikes the actuator block 118 of the actuator element. This causes the actuator element to pivot in the opposite direction in turn pivoting the tripping element 92 into engagement with the opposite link. Our firearm is therefore adapted in use to be broken and the firing pins cocked when the cocking lever is actuated, the barrel of the firearm discharged successively with the selector actuator element alternately enabling the trigger to release the firing pins.

As will be obvious to those skilled in the art, various changes and modifications of the preferred firearm as described herein can be made or followed without departing from the spirit of the disclosure or the scope of the claims.

We claim:

1. A firearm comprising, two barrels, a barrel support having flat side surfaces and holding said barrels in parallel over and under relationship, a retractable shell extractor on the rearward end of said barrel support having parallel longitudinally extending slide members slidably mounted on said barrel support in longitudinally extending grooves on said side surfaces thereof, a shell engaging plate connected to the rear ends of said slide members having two spaced locking apertures, and opposed arcuate sides having recessed edges tocontact the edge flanges of shells when seated in the shell chambers of said barre-ls, a receiver comprising, a stock, a breech block, and two spaced parallel longitudinally extending side plates joined to said breech block, pin means pivotally joining the barrel support to the forward end portions of said side plates with the rear portions of said barrels positioned therebetween, a first cam means operatively connecting the forward ends of said slide members of said shell extractor to said side plates at a point spaced vertically above said pin means to actuate said shell extractor as the fire-arm is broken, thrust blocks for maintaining the barrels and receiver in immovable relative relationship comprising, outwardly extending arcuate shaped lugs on said side surfaces of said barrel support, and complementary arcuate shaped grooves on the inside facing surfaces of said side plates joined to said breech block, a cocking lever having a handle portion and a trigger guard portion, means pivotally connecting the forward end of said cocking lever to the receiver, said receiver provided with a cavity adjacent said breech block, a firing mechanism in said cavity comprising, an elongated cocking block slidably mounted on said breeoh block in said cavity, said cocking block having three longitudinally spaced wedge shaped protrusions with c amming surfaces thereon, and two spaced oblong apertures adjacent the end protrusions, a link means joined at one end to said cocking block and at the other end to said cocking lever at a point spaced from said means pivotally connecting the lever to the receiver, tw-o vertically spaced firing pins loosely mounted in apertures in said breech block and extending through the oblong apertures in said cocking block, said firing pins each having an enlarged abutment on the central portion provided with a cam follower abutment surface in operative engagement with the respective upper and lower camming surfaces on said cocking block, a notch having a transverse edge on the lower side spaced from said enlarged abutment, and a horizontally extending transverse triangular shaped camming projection adjacent the rear end, a sear block having upper and lower vertical spaced apertures receiving the end portions of said firing pins and a central aperture, upwardly extending projections Within said upper and lower vertically spaced apertures on the lower sides adapted to selectively engage said notches on said firing pins to thereby hold said firing pins in cocked position, a first longitudinally extending groove in said elongated sear block, a safety means comprising, a pressure element slidably mounted in said first groove having a generally transverse inclined cam follower surface on the top end, a trigger locking lug in the opposite lower end, a block having three longitudinal-1y spaced apertures slidably mounted in said pressure element, and a coil spring biasing said block downwardly with respect to said pressure element, a safety actuating button slidably mounted on the top of the receiver adjacent said sear block, a cam surface on said button in operative engagement with said inclined cam follower surface on said pressure element, said safety means operative to apply either a small, or a strong downward pressure on said firing pins to securely lock same in said sear block, a first cover plate having vertically spaced apertures overlying said slide element, coil springs disposed about said firing pins abuttin said first cover plate and said abutment on said pins, a triggering means comprising, a second groove in said sear block opposite said first groove, a trigger, means slidably mounting said trigger on said receiver, a tripping element having a locking groove at a first end adapted to receive said trigger locking lug on said pressure element, an inclined camming surface, a longitudinally extending slot in the central portion, a pin to pivotally mount said tripping element on said means to slidably mount said trigger, and a means to manually pivot said tripping element, a first inverted L-shaped tripping link slidably mounted in said second groove having a transverse portion in selective engagement with the end of the upper firing pin and a calm follower surface on the lower end, a second tripping link slidably mounted in said second groove having a transverse portion in selective engagement with the end of the lower firing pin and a cam follower surface on the lower end, said cam follower surfaces on said first and second tripping links adapted to selectively engage and be activated by said inclined camming surface on said tripping element, a second cover plate enclosing said second groove in said sear block, a locking means comprising, two horizontally spaced locking pins disposed in apertures in said breech block and adapted to be disposed in locking engagement with said locking apertures in said shell engaging plate, a connecting member secured to the rear ends of said locking pins, and a cam follower surface on said connecting member in operative engagement with the camming surface on the center wedge shaped protrusion of said cocking block, an automatic selector means for changing firing order of the firing pins comprising, a shaft secured at one end to said connecting member and having a reduced diameter portion and a frusto-conical camming surface on the opposite end, a coil spring mounted on said shaft abutting said first cover plate and said connector member, an elongated selector actuator element positioned adjacent said second cover plate and pivotally mounted on the reduced diameter portion of said shaft, said actuator element having a rectangular central opening, two opposed blocks slidably mounted in the rectangular opening in said actuator element, spring means biasing said blocks toward each other, each of said blocks having an L-shaped apertures adapted to receive the ends of said firing pins, a pin element secured to the bottom end of said actuator element having a lower end portion disposed in said longitudinally extending slot in said tripping element, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of the firearm discharged successively with the selector actuator element alternately enabling the trigger to release the firing pins.

2. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, :a shell extractor on said barrel support having parallel longitudinally extending slide members, a shell engaging plate connected to the ends of said slide members having two spaced locking apertures and opposed arcuate sides having recessed edges to contact the edge flanges of shells when seated in the shell chambers of said barrels, a receiver comprising, a stock, a breech block, and two spaced parallel longitudinally extending side plates joined to said breech block, means pivotally joining said barrel support to the extending end portions of said side plates, cam means for actuating said slide members of said shell extractor when said firearm is bro-ken, thrust blocks for maintaining the barrels and receiver in immovable relative relationship comprising, arcuate shaped lugs on said barrel support, and complementary arcuate shaped grooves on the inside facing surfaces on said side plates joined to said breech block, a cocking lever having a handle portion and a trigger guard portion, means pivotally connecting said cocking lever to the receiver, said receiver provided with a cavity adjacent said breech block, a firing mechanism in said cavity comprising, a vertically extending cocking block slidably mounted on said breech block having three longitudinally spaced wedge shaped protrusions with camming surf-aces thereon, and two apertures, a link means joined at one end to said cocking block and at the other end to said cocking lever, two vertically spaced firing pins loosely mounted in aperture-s in said breech block and extending through said apertures in said cocking block, said firing pins each having an enlarged abutment on the central portion provided with a cam fol-lower abutment surface in operative engagement with the respective upper and lower carnming surfaces on said cocking block, a notch having a transverse edge on the lower side spaced from said enlarged abutment and a horizontally extending transverse tri angular shaped cam-ming projection adjacent the rear end, a sear block having upper and lower vertically spaced apertures receiving said firing pins, upwardly extending projections within said upper and lower spaced vertically spaced apertures on the lower sides adapted to selectively engage said notches on said firing pins to thereby hold said firing pins in cocked position, a safety means comprising, a pressure element slidably mounted on one side of said sear block having a generally transverse inclined cam follower surface on the top end, a trigger locking lug on the opposite lower end, and a block having two longitudinally spaced apertures slidably mounted in said pressure element, and a spring means biasing said block relative to said pressure element, a safety actuating abutment having a cam surface thereon in operative engagement with said inclined cam follower surface on said pressure element, means slidably mounting said safety actuating abutment on said receiver, spring means disposed about said firing pins urging same toward said barrels, a triggering means comprising, a trigger, means slidably mounting said trigger on said receiver, a tripping element having a locking groove adapted to receive said trigger locking lug on said pressure element, an inclined carnming surface, and a longitudinal slot in the central portion, means pivotally mounting said tripping element on said means to slidably mount said trigger, a first tripping link slidably mounted on said sear block opposite said pressure element, said tripping link having a transverse portion in selective engagement with the end of said upper firing pin and a cam follower surface on the lower end, a second tripping link slidably mounted on said sear block having a transverse portion in selective engagement with the end of the lower firing pin and a cam follower surface on the lower end, said cam follower surfaces on said first and second tripping links adapted to selectively engage and be activated by said inclined carnming surface on said tripping element, a barrel locking means comprising, two horizontally spaced locking pins disposed :in apertures in said breech block and adapted to be selectively disposed in locking engagement with said locking apertures in said shell engaging plate, a connecting member secured to said locking pins having a cam follower surface in operative engagement with said camming surface on said center wedge shaped protrusion on said cocking block, an automatic selector means for changing firing order of said firing pins comprising, a shaft connected to said connecting member having a frusto-conical carnming surface, an elongated selector actuator element having a rectangular central opening, two opposed blocks mounted in said rectangular opening, spring means biasing said blocks toward each other, each of said blocks having an L-shaped aperture adapted to receive the ends of said firing pins, an elongated means on said actuator element having an end portion disposed in said longitudinally extending slot in said tripping element, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of the firearm discharge successively with the selector actuator element alternately enabling said trigger to release the firing pins.

3. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, a shell extractor on said barrel support having a shell engaging plate, means supporting said shell engaging plate, a receiver comprising, a stock, a breech block, and a forward bifurcated portion, means pivotally joining said barrel support to said bifurcated portion of said receiver, means on said bifurcated portion for actuating said shell extractor when said firearm is broken, thrust blocks for maintaining said barrels and receiver in immovable firing position comprising, arcuate shaped lugs on said barrel support, and complementary arcuate shaped grooves on said bifurcated portions receiving said lugs, 21 cocking lever, means pivotally connecting said cocking lever to said receiver, a firing mechanism mounted within said receiver comprising, an elongated vertically slidably cocking block, said cocking block having a plurality of wedge shaped protrusions with carnming surfaces thereon, means connecting said cocking block to said cocking lever for actuation thereof, two vertically spaced firing pins loosely mounted in said breech block, said firing pins having abutment means on the central portions thereof provided with cam follower abutment surfaces in operative engagement with the respective carnming surfaces on said cocking block, a notch means on the lower side of each of said firing pins, and a horizontally extending transverse triangular shaped carnming projection adjacent the rear end, a sear block having upper and lower vertically shaped apertures receiving portions of said firing pins, projecting means within said upper and lower apertures adapted to selectively engage said notch means on said firing pins, a safety means comprising, a pressure element slidably mounted on said sear block having a trigger locking lug and a plurality of spaced apertures, means biasing said pressure element against said firing pins disposed in said aperture, an actuating means contacting said pressure element adapting to selectively apply either a large or a moderate pressure against said firing pins, a trigger means comprising, a trigger, means movably mounting said trigger on said receiver, a tripping element provided with a locking groove adapted to receive said trigger locking lug on said pressure element and an inclined carnming surface, a means to pivotally mount said tripping element on said means to slidably mount said trigger, a first tripping link operatively engaging the upper firing pin and provided with a camrning surface on the lower end, a second tripping link operatively engaging the lower firing pin and provided with a carnming surface on the lower end, said carnming follower surfaces on said first and second tripping links arranged to selectively engage and be activated by said inclined carnming surface on said tripping element, a barrel locking means associated with said lever for locking said receiver and said barrel support means in fir ing position, an automatic selector means for changing the actuating position of said tripping element comprising, a shaft operably connected to one of said carnming means on said cocking block, a selector actuator element pivotal- 1y mounted within said receiver, said actuator element having two opposed blocks having L-shaped apertures therein slidably mounted on said actuator element, means biasing said blocks toward each other, and means connected to said tripping element adapted to pivot same in response to movement of said actuator element, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of said firearm discharge successively with the selector actuator element alternately enabling the trigger to release the firing pins.

4. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, a shell extractor on said barrel support, a receiver comprising, a stock, a breech block, and a bifurcated portion, means pivotally joining said barrel support to said bifurcated portion, a cam means for actuating said shell extractor when said firearm is broken, thrust blocks for maintaining the barrels and receiver in immovable firing position comprising, outwardly projecting arcuate shaped lugs on said barrel support and complementary arcuate shaped grooves on the inside facing surfaces of said hifurcated portion receiving said lugs, a cocking lever, means pivotally mounting said cocking lever on said receiver, barrel locking means actuated by said cocking lever for locking said barrel support in firing position, a firing mechanism comprising, a vertically slidable cocking block having carnming means thereon, means connecting said cocking block for said lever for actuation thereof, two

firing pins loosely mounted in said breech block, each of said firing pins having a cam follower means in engagement with said cocking block, a notch means, and a transverse camming projection, a scar block having vertically spaced apertures receiving portions of said firing pins, projecting means within said vertically spaced apertures to selectively engage said notch means on said firing pins, safety means comprising, a slidable pressure element having abutment means adapted to apply transverse pressure on said firing pins to hook same in said sear block, means to manually actuate said pressure element and thereby apply varying pressure with said abutment means, a triggering means comprising, a trigger, means mounting said trigger on said receiver, a tripping element pivotally mounted on said means slidably mounting said trigger having an inclined camming surface, a means to manually pivot said tripping element, a first tripping link operatively engaged with the upper firing pin having a camming surface on the end thereof, a second tripping link operatively engaged with said lower firing pin having a cam follower surface on the end, said cam follower surfaces on said first and second links adapted to selectively engage and be activated by said inclined camming surface on said tripping element, an automatic selector means for changing the position of said tripping element comprising, a slidably mounted shaft means, cam follower means associated with said shaft engaging said cocking block for moving said shaft longitudinally, a selector actuator element pivotally mounted in said receiver having two opposed blocks slidably mounted thereon having apertures therein to receive the respective cumming projections of said firing pins, means biasing said blocks into actuating engagement with said shaft, means connecting said actuator element to said tripping element for actuation, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of the firearm discharged successively with the selector actuator element alternately enabling the trigger to release the firing pins.

5. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, a receiver having a stock, a breech block, and a bifurcated portion, means pivotally joining said barrel support and said bifurcated portion of said receiver, a firing mechanism within said receiver comprising, a cooking lever pivotally mounted on said receiver, a cocking block slidably mounted on said breech block and having a plurality of spaced protrusions with camming surfaces thereon, a link means connecting said cocking block and said cocking lever in operative relation, two spaced firing pins loosely mounted in apertures in said breech block, each firing pin having an enlarged ebutment on the central portion provided with a cam follower abutment surface in operative engagement with a camming surface on said cocking block, a notch means spaced from said enlarged abutment, and an extending transverse carnming projection adjacent the end, a scar block having spaced apertures receiving and selectively engaging the camming projections of said firing pins, projecting means within said spaced apertures adapted to selectively engage said notch means on said firing pins to thereby hold said firing pins in cocked positions, a safety means having a pressure element slidably mounted relative to said sear block having means thereon to exert a pressure on said firing pins to lock same on said projecting means in said spaced apertures, and a manually actuated button for activating said pressure element, a triggering means having a trigger movably mounted on said receiver, and a tripping element having an inclined carnming surface, two spaced link means having portions contacting respective firing pins and caming surfaces on the lower ends thereof adapted to be selectively activated 'by said inclined camming surface on said tripping element, an automatic selector means for changing the activating relationship of said trigger and link means having a longitudinally extending shaft with a camming surface thereon, means associated with said cocking block for moving said shaft longitudinally, an elongated selector actuator element having two opposed blocks slidably mounted thereon, spring means biasing said blocks into activating engagement with said shaft, with each of said blocks having an aperture adapted to receive the camrning projection of said firing pins, and a means connecting said actuator element to said tripping element for selective activating engagement with said link means, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of the firearm discharge successively with the selector actuator element enabling the trigger to alternately release the firing pins.

6. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, a shell extractor on said barrel support, a receiver comprising, a stock, a breech block, and a bifurcated portion, mean pivotally joining said barrel support to said bifurcated portion, a cam means for actuating said shell extractor when said firearm is broken, thrust blocks for maintaining the barrels and receiver in immovable firing position comprising, outwardly projecting arcuate shaped lugs on said barrel support and complementary arcuate shaped grooves on the inside facing surfaces of said bifurcated portion receiving said lugs, a cocking lever, means pivotally mounting said cocking lever on said receiver, barrel locking means actuated by said cocking lever for locking said barrel support in firing position, a firing mechanism comprising, a movable cocking means having camrning means thereon, means connecting said cocking means for said lever for actuation thereof, two firing pins movably mounted in said breech block, said firing pins having a cam follower means in engagement with said cocking means, a catch means, and a camming projection, a scar block receiving portions of said firing pins, means within said sear block to engage said catch means on said firing pins, safety means comprising, a movable pressure element having abutment means adapted to apply pressure on said firing pins to hook same in said sear block, means to actuate said pressure element and thereby apply pressure with said abutment means, a triggering means comprising, a trigger, means mounting said trigger on said receiver, a tripping element means movably mounting said trigger having a camming surface, a means to move said tripping element means, tripping links operatively engaged with the upper firing pin and the lower firing pin having a cam follower surface in the end portion, said cam follower surface on said links adapted to engage and be actuated by said camming surface on said tripping element means, means for changing the position of said tripping element means, comprising, a movable shaft means, a cam follower means associating with said shaft means engaging said cocking means for moving said shaft means, an actuator element mounted in said receiver to receive the camming projections of said firing pins, means biasing said actuator element into actuating engagement with said shaft means,

$3115 connecting said actuator element to said tripping element means for actuation, said firearm adapted in use to be broken and the firing pins cocked when said cocking lever is actuated, the barrels of the firearm discharged successively with the actuator element enabling the trigger to release a firing pin.

'7. A firearm comprising, two barrels, a barrel support holding said barrels in parallel over and under relationship, a receiver having a stock, a breech block, and a bifurcated portion, means pivotally joining said barrel support and said bifurcated portion of said receiver, a firing mechanism within said receiver comprising, a cocking lever pivotally mounted on said receiver, a cocking block slidably mounted on said breech 'block having a plurality of spaced protrusions with camming surfaces thereon, a. link means connecting said cocking block and said cocking lever in operative relation, two spaced firing pins movably mounted in apertures in said breech block, said firing pins provided with a cam follower surface in operative engagement with a camming surface on said cocking block, a catch means, and an extending camming projection adpacent the end, a sear block receiving the camming projections of said firing pins, means within said sear block adapted to engage said catch means on said firing pins to thereby hold said firing pins in cocked position, a safety means having a pressure element movably mounted relative said sear block and having means thereon to exert pressure on said firing pins to lock same on said means in said sear block, and means for actuating said pressure element, a triggering means having a trigger movably mounted on said receiver, and a tripping element means having a camrning surface, link means having portions connecting firing pins and camming surfaces on the end portions thereof adapted to be actuated by said camming surface on said tripping element means, means for actuating said trigger and link means having a shaft with a camming surface thereon, means associated with said cocking block for moving said shaft, an elongated actuator element having a block slidably mounted thereon, means biasing said UNITED STATES PATENTS 719,331 1/1903 Henry 4Z42 1,578,638 3/1926 Browning 4242 1,578,639 3/1926 Browning 4242 1,702,153 2/ 1929 Chevallier et a1. 42-42 1,834,544 12/1931 Klebe 4242 1,924,656 8/1933 Ribe 4240 3,131,499 5/ 1964 Arsenault 42-42 BENJAMIN A. BORCHELT, Primary Examiner. 

6. A FIREARM COMPRISING, TWO BARRELS, A BARREL SUPPORT HOLDING SAID BARRELS IN PARALLEL OVER AND UNDER RELATIONSHIP A SHELL EXTRACTOR ON SAID BARREL SUPPORT, A RECEIVER COMPRISING, A STOCK, A BREECH BLOCK, AND A BIFURCATED PORTION, MEANS PIVOTALLY JOINING SAID BARREL SUPPORT TO SAID BIFURCATED PORTION, A CAM MEANS FOR ACTUATING SAID SHELL EXTRACTOR WHEN SAID FIREARM IS BROKEN, THRUST BLOCKS FOR MAINTAINING THE BARRELS AND RECEIVER IN IMMOVABLE FIRING POSITION COMPRISING, OUTWARDLY PROJECTING ARCUATE SHAPE LUGS ON SAID BARREL SUPPORT AND COMPLEMENTARY ARCUATE SHAPED GROOVES ON THE INSIDE FACING SURFACES OF SAID BIFURCATED PORTION RECEIVING SAID LUGS, A COCKING LEVER, MEANS PIVOTALLY MOUNTING SAID COCKING LEVER ON SAID RECEIVER, BARREL LOCKING MEANS ACTUATED BY SAID COCKING LEVER FOR LOCKING SAID BARREL SUPPORT IN FIRING POSITION, A FIRING MECHANISM COMPRISING, A MOVABLE COCKING MEANS HAVING CAMMING MEANS THEREON, MEANS CONNECTING SAID COCKING MEANS FOR SAID LEVER FOR ACTUATION THEREOF, TWO FIRING PINS MOVABLE MOUNTED IN SAID BREECH BLOCK, SAID FIRING PINS HAVING A CAM FOLLOWER MEANS IN ENGAGEMENT WITH SAID COCKING MEANS, A CATCH MEANS, AND A CAMMING PROJECTION, A SEAR BLOCK RECEIVING PORTIONS OF SAID FIRING PINS, MEANS WITHIN SAID SEAR BLOCK TO ENGAGE SAID CATCH MEANS ON SAID FIRING PINS, SAFETY MEANS COMPRISING, A MOVABLE PRESSURE ELEMENT HAVING ABUTMENT MEANS ADAPTED TO APPLY PRESSURE ON SAID FIRING PINS TO HOOK SAME IN SAID SEAR BLOCK, MEANS TO ACTUATE SAID PRESSURE ELEMENT AND THEREBY APPLY PRESSURE WITH SAID ABUTMENT MEANS, A TRIGGERING MEANS COMPRISING, A TRIGGER, MEANS MOUNTING SAID TRIGGER ON SAID RECEIVER, A TRIPPING ELEMENT MEANS MOVABLY MOUNTING SAID TRIGGER HAVING A CAMMING SURFACE, A MEANS TO MOVE SAID TRIPPING ELEMENT MEANS, TRIPPING LINKS OPERATIVELY ENGAGED WITH THE UPPER FIRING PIN AND THE LOWER FIRING PIN HAVING A CAM FOLLOWER SURFACE IN THE END PORTION, SAID CAM FOLLOWER SURFACE ON SAID LINKS ADAPTED TO ENGAGE AND BE ACTUATED BY SAID CAMING SURFACE ON SAID TRIPPING ELEMENT MEANS, MEANS FOR CHANGING THE POSITION OF SAID TRIPPING ELEMENT MEANS, COMPRISING, A MOVABLE SHAFT MEANS, A CAM FOLLOWER MEANS ASSOCIATING WITH SAID SHAFT MEANS ENGAGING SAID COCKING MEANS FOR MOVING SAID SHAFT MEANS, AN ACTUATOR ELEMENT MOUNTED IN SAID RECEIVER TO RECEIVE THE CAMMING PROJECTIONS OF SAID FIRING PINS, MEANS BIASING SAID ACTUATOR ELEMENT INTO ACTUATING ENGAGEMENT WITH SAID SHAFT MEANS, MEANS CONNECTING SAID ACTUATOR ELEMENT TO SAID TRIPPING ELEMENT MEANS FOR ACTUATION, SAID FIREARM ADAPTED IN USE TO BE BROKEN AND THE FIRING PINS COCKED WHEN SAID COOKING LEVER IS ACTUATED, THE BARRELS OF THE FIREARM DISCHARGED SUCCESSIVELY WITH THE ACTUATOR ELEMENT ENABLING THE TRIGGER TO RELEASE A FIRING PIN. 